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HMAC utilizes a cryptographic hash function, such as MD5, SHA-1, or SHA-256, along with a secret key, to produce the authentication code. CMAC, on the other hand, uses a block cipher, such as AES (Advanced Encryption Standard), in combination with a secret key.
What are some examples of asymmetric encryption? Rivest Shamir Adleman (RSA) the Digital Signature Standard (DSS), which incorporates the Digital Signature Algorithm (DSA) Elliptical Curve Cryptography (ECC) the Diffie-Hellman exchange method. TLS/SSL protocol.
As outlined in SP 800-38B, Recommendation for Block Cipher Modes of Operation: The CMAC Mode for Authentication, CMAC is built using an approved block cipher, which is an algorithm that uses a symmetric encryption key, similar to the NISTs Advanced Encryption Standard (AES), which also uses a symmetric key and was
Symmetric encryption uses a single key that needs to be shared among the people who need to receive the message while asymmetric encryption uses a pair of public key and a private key to encrypt and decrypt messages when communicating.
Websites with this certificate authenticate servers, and they generate symmetric key algorithms for every session. Essentially the HTTPS system works via asymmetric encryption. But then, people use asymmetric encryption to exchange the symmetric keys for a TLS handshake.
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Symmetric cryptography, known also as secret key cryptography, is the use of a single shared secret to share encrypted data between parties.
For the message encryption itself a symmetric cipher is used and for the key, the asymmetric one. Therefore, the slower, asymmetric method is used only for the key. So, faster symmetric data encrypts and decrypts the data.
Cipher-based message authentication codes (or CMACs) are a tool for calculating message authentication codes using a block cipher coupled with a secret key. You can use an CMAC to verify both the integrity and authenticity of a message. A subset of CMAC with the AES-128 algorithm is described in RFC 4493.

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